#include <stdio.h>
#include <stdbool.h>

int cxdd(int a,int b,int c){
    if(a>b){
        int x=a;
        a=b;
        b=x;
    }
    if(a>c){
        int x=a;
        a=c;
        c=x;
    }
    if(b>c){
        int x=b;
        b=c;
        c=x;
    }
    printf("a=%d b=%d c=%d\n",a,b,c);
}




int huhuan(int a,int b){
    int num=a;
    a=b;
    b=num;
    printf("%d %d\n",a,b);
}



int main(){
    int a=28,b=36;
    huhuan(a,b);
    return 0;
}